Oil cooling system for motor vehicles



N0v 26, 194:0-v F. J. MERKLE OIL COOLING SYSTEM FOR MOTOR VEHICLES FiledApril 18, 1940 rwcwo'o 17. J. Merida Patented Nov. 26, 1940 PAT T FFICEOIL COOLING SYSTEM FOR MOTOR VEmCLES y Fredrick Josph Merkle, Peoria,Ill. Application April i8, 1940, Serial No. 330,422

2 Claims.

This invention relates to an oil cooling system for the internalcombustion engine/of a motor vehicle.

It is particularly aimed to provide a novel l means whereby the oil ismaintained in circulation and passed through a radiator in order to coolthe same, the oil being removed from the oil pan of the engine at thezone of greatest heating and being returned to such pan.

The more specic objects and advantages will become apparent from aconsideration of the description following taken in connection withaccompanying drawing illustrating an operative embodiment.

l5 In said drawing: f

Figure l is a view in side elevation of an internal combustion engineembodying my improvements, the same being partly broken away to disclosedetails;

Figure 2 is an enlarged vertical sectional view taken on the plane oiline 2-2 of Figure l;

Figure 3 is a vertical sectional view taken on the plane of line 3-3 ofFigure 2;

Figure 4 is a front elevation of one section of 25 the oil radiator, and

Figure 5 is a front elevation'of the other section of the oil radiator.l

Referring specically to the drawing wherein like reference charactersdesignate like or similar parts, Ii represents a conventional internalcombustion engine such as is used on motor vehicles for propulsion. As.usual, such motor or engine has an oil pan at I I and the motor drives ashaft I2 for a fan I3 which is disposed behind the radiator I4 of itswater cooling system.

In accordance with my invention, a pulley I5 is keyed to said shaft I2and a belt I6 is trained thereover which is also trained over a pulleyI1 which operates a pump I8. Said pump I8 is -mounted on the casing ofthe vengine III and has a pipe or conduit I9 at its l inlet end whichcommunicates with and lis coupled to a lateral inlet pipe 20, mounted at2I in the wall of the pan I I and extending and terminating interiorlyot such pan.

The inner end of pipe 20 is closed by a screw cap 22 which positions anintake nozzle 23 on pipe 20 in abutment with a shoulder 24 tla'reon.

w Nozzle 23 is swiveled on the pipe 20 and the latter has a port oropening 26 therethrough in registry with the bore of the pipe. Suchvpipecarries a lloat 28 at its outer end, adapted to iloat on the oil withinthe pan I I in order that the oil pumped 5l through the nozzle 20 willalways be taken from the top, which is the zone of maximum heating ofthe oil.

Pump I8 causes the oil to pass through an outletpipe 21, which deliversto the top header 28 of a vertical tube or equivalent radiator 29 suit-5 1 ably located and usually mounted in front of the radiator I4. Fromthe lower header 30 of the radiator 29, the oil is transferred through ashort pipe 3i into a horizontal tube serpentine radiator 32, travelingupwardly therein and being returned 10 to the oil pan II through areturn pipe or conduit 33.

A check valve 34 is preferably provided within the pipe I9, to permitpumping of the oil from the pan II therethrough and to prevent therel5turn of oil to such pan.

It will be realized that in accordance with the invention, the oil istaken from the zone of greatest heating thereof and passed throughradiators which are cooled in the atmosphere, the oil pass- 20 I `atorexteriorly ofthe engine, a conduit member disposed primarily exteriorlyoi* the engine e'xtending into said pan to receive oil from the latter,and having an opening within the pan, a $5 pivotally mounted inletnozzle on said conduit member having a float to engage the oil in thepan, a closure for the inner end of said conduit member positioning saidnozzle. a chamber means supported on said conduit member exteriorly of40 the pan, and a valve in the chamber -member to prevent back ilow ofoil.

2. The combination of claim l wherein the conduit member has anenlargement exteriorly of the engine to which the chamber means isconnected. said conduit member being screw threaded into the engine, anut on-the screw threaded portion of the conduit between the eny`largement and engine and bearing against the 50 latter, said conduitmember within the engine having a shoulder abutted by the inlet nozzleon the opposite side to the closure.

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